Filler surface modification

Mitsuishi, M. Kawasaki, H. (1996) Fillers surface modification, in CRC Handbook on Polymer Science, Boca Raton, FL CRC Press. 

Liauw, C. M., Rothon, R. N., Lees, G. C., Dumitru, P., Iqbal, Z., Khunova, V., and Alexy, P. (2000). Filler Surface Modification with Organic Acids and... 

Adhesion interactions at the solids/polymers interfaces are first and foremost adsorption interactions between the sofid surface and polymer molecules [1—11]. After polymerization there is a low molecular-weight fraction of coupling agents, which can decrease the cohesion and adhesion of the polymer film. If the molecules from this fraction interact with the filler particles preferentially (which can be reached due to the filler surface modification) instead of with the material surface covered, then the boundary layer of the film can be free from this fraction and adhesion increases as strengthening the boundary layer of the coating leads to stronger adhesion of the coating to the covered surfaces [46]. 

His research interests include organic-inorganic nanocomposites, novel filler surface modifications, thermal stability enhancements, polymer latexes with functionalized surfaces, etc. He has authored more than 40 scientific publications, book chapters, and patents on these subjects. 

Representation of filler platelets surface modified with tetraoctadecylammonium. (Reproduced from Mittal, V., Need of new surface modifications, in Mittal, V. (ed). Polymer Nanocomposites Advances in Filler Surface Modification Techniques, Nova Science Publishers, New York, 1-14,2009.)... 

However, owing to better interfacial interactions due to the elimination of the thermal degradation of the filler surface modification to a large extent (thus eliminating the unwanted side reactions) and the effect of shearing forces, a decrease in the tac-toid thickness and, hence, an increase in the aspect ratio can still be expected. Figure... 

I. Ulkem "Static and Dynamic Mechanical Properties of (Bauxide) and (Carbon Black) Filled SBR Vulcanizates Effects of Filler Surface Modification on Properties Ph.D. Thesis, Middle East Technical University, Dept, of Chem., Ankara, (July 1990), Paper is in Preparation. 

Figure 1.18 TGA thermograms (under nitrogen) of (a) pure PS, (b) the nanocomposite containing CPC as filler surface modification, and (c) the nanocomposite containing the inclusion complex of CPC with cyclodextrin as filler surface modification. Reproduced from [42] with permission from Elsevier.

V. Mittal, Role of clean clay surface on composite properties. In Polymer Nanocomposites Advances in Filler Surface Modifications, ed. V. Mittal (New York Nova Science Publishers, 2009), pp. 143-52. 

C. M. Liauw, G. C. Lees, and S. J. Hurst, The effect of filler surface modification on the mechanical properties of aluminium hydroxide filled polypropylene. Plastics Additives and Compounding, 24 (1995), 249-60. 

The first section of the book deals with the thermal stability of layered silicates and polymer nanocomposites. Chapter 1 provides an overview of layered silicates as fillers, organic surface modification of such layered silicates, and thermal stability considerations in relation to the surface modification molecules ionically exchanged on the filler surface. Chapter 2 provides in-depth information on the mechanisms of thermal degradation of layered silicates modified with ammonium and other thermally stable filler surface modifications. Chapter 3 provides the example of generating thermally stable polystyrene... 

However, to bring about complete infiltration of the surface, the surface tension of the resin must be lower than the critical surface tension of the filler. Surface modification agents used in polymer matrix composites change the surface state of fillers so the fillers will have good infiltration with the resin, and as a result the filler and the resin will have good bonding strength. 

StockeUmber KW, Svistkov S, Pelevin G, Heinrich G (2011) Impact of filler surface modification on large scale mechanics of styrene butadiene/silica rubber composites. Macromolecules 44(11) 4366-4381... 

Fig. 9.4 Influence of the filler surface modification on the methanol permeability and proton conductivity of the membranes. Adapted from [34]...

Liauw CM, Lees GC, Hurst SJ, Rothon RN, Ali S. Effect of silane-based filler surface treatment formulation on the interfacial properties of impact modified polypropylene/magne-sium hydroxide composites. Compos Part A Appl Sci Manuf, 1998 29(9-10) pp. 1313-1318. Liauw CM, Lees GC, Hurst S), Rothon RN, Dobson DC. The effect of filler surface modification on the mechanical properties of aluminum hydroxide filled polypropylene. Plast Rub Compos Process Appl, 1995 24(5) pp. 249-260. 

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